I’ve accepted the data can’t be recovered, though still mourning the loss a bit. I’m sorry this happened to you too if you had lots of guides/locations saved over the years! It plain sucks.
However I personally would still press the issue because (for myself) I have noticed that anytime I power down my phone any locations and directions I’ve searched, saved a location to favorites, it still all wipes from my phone. 😠
Not that I even want to try to rebuild the extensive years old guides I had, but even if I did it would still be wiped from my phone, so I would hope Apple will find a fix for this to prevent it from continuously happening.